IT1068268B - PROCEDURE FOR THE PRODUCTION OF UREA AND PURIFICATION OF WATERS - Google Patents

PROCEDURE FOR THE PRODUCTION OF UREA AND PURIFICATION OF WATERS

Info

Publication number
IT1068268B
IT1068268B IT27024/76A IT2702476A IT1068268B IT 1068268 B IT1068268 B IT 1068268B IT 27024/76 A IT27024/76 A IT 27024/76A IT 2702476 A IT2702476 A IT 2702476A IT 1068268 B IT1068268 B IT 1068268B
Authority
IT
Italy
Prior art keywords
waters
urea
purification
procedure
production
Prior art date
Application number
IT27024/76A
Other languages
Italian (it)
Inventor
Umberto Zardi
Vincenzo Lagana
Original Assignee
Snam Progetti
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Snam Progetti filed Critical Snam Progetti
Priority to IT27024/76A priority Critical patent/IT1068268B/en
Priority to CA284,053A priority patent/CA1106404A/en
Priority to AU27673/77A priority patent/AU511880B2/en
Priority to IT2659577A priority patent/IT1085408B/en
Priority to IN1283/CAL/77A priority patent/IN147029B/en
Priority to MX170424A priority patent/MX150529A/en
Priority to CS775684A priority patent/CS205083B2/en
Priority to PL1977200608A priority patent/PL116475B1/en
Priority to ES462234A priority patent/ES462234A1/en
Priority to JP52105969A priority patent/JPS6058228B2/en
Priority to YU02125/77A priority patent/YU39132B/en
Priority to LU78097A priority patent/LU78097A1/xx
Priority to DD7700200918A priority patent/DD133091A5/en
Priority to DE2740358A priority patent/DE2740358C2/en
Priority to GB7737615A priority patent/GB1542371A/en
Priority to FR7727215A priority patent/FR2364203A1/en
Priority to DK399577A priority patent/DK399577A/en
Priority to IE1872/77A priority patent/IE45681B1/en
Priority to NL7709968A priority patent/NL7709968A/en
Priority to SE7710151A priority patent/SE425972B/en
Priority to AR269158A priority patent/AR219502A1/en
Priority to BE180806A priority patent/BE858574A/en
Priority to BR7706063A priority patent/BR7706063A/en
Priority to CH1108777A priority patent/CH625505A5/it
Priority to US06/216,303 priority patent/US4314077A/en
Application granted granted Critical
Publication of IT1068268B publication Critical patent/IT1068268B/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C273/00—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups
    • C07C273/02—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups of urea, its salts, complexes or addition compounds
    • C07C273/04—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups of urea, its salts, complexes or addition compounds from carbon dioxide and ammonia
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/02—Treatment of water, waste water, or sewage by heating
    • C02F1/025—Thermal hydrolysis
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/06—Treatment of sludge; Devices therefor by oxidation
    • C02F11/08—Wet air oxidation
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
    • C02F2103/36—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32 from the manufacture of organic compounds

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
IT27024/76A 1976-09-09 1976-09-09 PROCEDURE FOR THE PRODUCTION OF UREA AND PURIFICATION OF WATERS IT1068268B (en)

Priority Applications (25)

Application Number Priority Date Filing Date Title
IT27024/76A IT1068268B (en) 1976-09-09 1976-09-09 PROCEDURE FOR THE PRODUCTION OF UREA AND PURIFICATION OF WATERS
CA284,053A CA1106404A (en) 1976-09-09 1977-08-04 Method for the production of urea and purification of water
AU27673/77A AU511880B2 (en) 1976-09-09 1977-08-05 Production of urea
IT2659577A IT1085408B (en) 1976-09-09 1977-08-09 Extracting aromatic hydrocarbon(s) from mixtures - by liquid extn. extractive distn., and rectification
IN1283/CAL/77A IN147029B (en) 1976-09-09 1977-08-18
MX170424A MX150529A (en) 1976-09-09 1977-08-31 IMPROVED PROCEDURE FOR THE PRODUCTION OF UREA
CS775684A CS205083B2 (en) 1976-09-09 1977-08-31 Method of producing urea with the contemporary purification of obtained water
PL1977200608A PL116475B1 (en) 1976-09-09 1977-09-01 Method of manufacture of urea with waste waters treatment
ES462234A ES462234A1 (en) 1976-09-09 1977-09-02 Method for the production of urea and purification of water
JP52105969A JPS6058228B2 (en) 1976-09-09 1977-09-05 Method of carrying out urea production and water purification
YU02125/77A YU39132B (en) 1976-09-09 1977-09-06 Process for the production of carbamides for the purification of water
DD7700200918A DD133091A5 (en) 1976-09-09 1977-09-07 PROCESS FOR PREPARING UREA
LU78097A LU78097A1 (en) 1976-09-09 1977-09-07
DE2740358A DE2740358C2 (en) 1976-09-09 1977-09-07 Process for the production of urea with simultaneous wastewater treatment
FR7727215A FR2364203A1 (en) 1976-09-09 1977-09-08 PROCESS FOR THE PRODUCTION OF UREA AND WATER TREATMENT
DK399577A DK399577A (en) 1976-09-09 1977-09-08 PROCEDURE FOR THE PRODUCTION OF URINE FACTORY
GB7737615A GB1542371A (en) 1976-09-09 1977-09-08 Production of urea
IE1872/77A IE45681B1 (en) 1976-09-09 1977-09-09 Production of urea
NL7709968A NL7709968A (en) 1976-09-09 1977-09-09 PROCESS FOR PREPARING UREA AND PURIFYING WATER.
SE7710151A SE425972B (en) 1976-09-09 1977-09-09 PROCEDURE FOR PREPARING CARBAMIDE
AR269158A AR219502A1 (en) 1976-09-09 1977-09-09 PROCEDURE FOR THE PRODUCTION OF UREA
BE180806A BE858574A (en) 1976-09-09 1977-09-09 PROCESS FOR THE PRODUCTION OF UREA AND WATER TREATMENT
BR7706063A BR7706063A (en) 1976-09-09 1977-09-09 PERFECT PROCESS FOR THE PRODUCTION OF UREA WITH PURIFICATION OF DISCHARGE WATERS
CH1108777A CH625505A5 (en) 1976-09-09 1977-09-09
US06/216,303 US4314077A (en) 1976-09-09 1980-12-15 Method for the production of urea and purification of water

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT27024/76A IT1068268B (en) 1976-09-09 1976-09-09 PROCEDURE FOR THE PRODUCTION OF UREA AND PURIFICATION OF WATERS

Publications (1)

Publication Number Publication Date
IT1068268B true IT1068268B (en) 1985-03-21

Family

ID=11220800

Family Applications (1)

Application Number Title Priority Date Filing Date
IT27024/76A IT1068268B (en) 1976-09-09 1976-09-09 PROCEDURE FOR THE PRODUCTION OF UREA AND PURIFICATION OF WATERS

Country Status (24)

Country Link
US (1) US4314077A (en)
JP (1) JPS6058228B2 (en)
AR (1) AR219502A1 (en)
AU (1) AU511880B2 (en)
BE (1) BE858574A (en)
BR (1) BR7706063A (en)
CA (1) CA1106404A (en)
CH (1) CH625505A5 (en)
CS (1) CS205083B2 (en)
DD (1) DD133091A5 (en)
DE (1) DE2740358C2 (en)
DK (1) DK399577A (en)
ES (1) ES462234A1 (en)
FR (1) FR2364203A1 (en)
GB (1) GB1542371A (en)
IE (1) IE45681B1 (en)
IN (1) IN147029B (en)
IT (1) IT1068268B (en)
LU (1) LU78097A1 (en)
MX (1) MX150529A (en)
NL (1) NL7709968A (en)
PL (1) PL116475B1 (en)
SE (1) SE425972B (en)
YU (1) YU39132B (en)

Families Citing this family (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1141030B (en) * 1980-08-29 1986-10-01 Snam Progetti PROCEDURE FOR THE PRODUCTION OF UREA
NL8102391A (en) * 1981-05-15 1982-12-01 Unie Van Kunstmestfab Bv METHOD FOR EXTRACTING VALUABLE COMPONENTS FROM THE WASTE STREAMS OBTAINED IN THE URE PREPARATION.
IT1211125B (en) * 1981-10-16 1989-09-29 Ortu Francesco NITROGEN COMPOUNDS. PROCESS FOR THE PREPARATION OF
JPS5867661A (en) * 1981-10-16 1983-04-22 Mitsui Toatsu Chem Inc Synthesizing method of urea
JPS61109760A (en) * 1984-11-02 1986-05-28 Toyo Eng Corp Production of urea
NL8502228A (en) * 1985-08-12 1987-03-02 Unie Van Kunstmestfab Bv METHOD FOR THE PREPARATION OF UREA.
NL8502227A (en) * 1985-08-12 1987-03-02 Unie Van Kunstmestfab Bv METHOD FOR THE PREPARATION OF UREA.
JPS63112552A (en) * 1986-10-30 1988-05-17 Toyo Eng Corp Separation method for unconverted substance
IT1232670B (en) * 1989-09-15 1992-03-02 Snam Progetti PROCEDURE FOR PURIFICATION OF WASTEWATER PRODUCED BY UREA PRODUCTION PLANTS.
IT1232669B (en) * 1989-09-15 1992-03-02 Snam Progetti PROCEDURE FOR THE PRODUCTION OF UREA WITH HIGH ENERGY PERFORMANCE.
JP2000054950A (en) * 1998-06-05 2000-02-22 Hanako Narutomi Ordinary temperature heat engine
US6511644B1 (en) 2000-08-28 2003-01-28 The Chemithon Corporation Method for removing contaminants in reactors
US6761868B2 (en) * 2001-05-16 2004-07-13 The Chemithon Corporation Process for quantitatively converting urea to ammonia on demand
NL1019848C2 (en) * 2002-01-28 2003-07-30 Dsm Nv Process for the preparation of urea.
US6887449B2 (en) * 2002-11-21 2005-05-03 The Chemithon Corporation Method of quantitatively producing ammonia from urea
US6990691B2 (en) * 2003-07-18 2006-01-31 Depuy Products, Inc. Head gear apparatus
EP1918273A1 (en) † 2006-11-04 2008-05-07 Urea Casale S.A. Process for urea production and related plant
EP2128129A1 (en) 2008-05-20 2009-12-02 Urea Casale S.A. Method for the modernization of a urea production plant
EP2199279A1 (en) 2008-12-17 2010-06-23 Urea Casale S.A. Improvement to the high-pressure loop in a process for synthesis of urea
EP2397463A1 (en) 2010-06-16 2011-12-21 Urea Casale SA Method for revamping a self-stripping urea plant
EP2502881A1 (en) 2011-03-24 2012-09-26 Urea Casale S.A. Process and plant for ammonia-urea production
ITMI20120013A1 (en) 2012-01-09 2013-07-10 Saipem Spa PROCEDURE FOR THE SYNTHESIS OF UREA INCLUDING A STRIPPER FUND OF PASSIVATION
EP2784062A1 (en) 2013-03-27 2014-10-01 Urea Casale SA Method for revamping a self-stripping urea plant
WO2017171546A1 (en) 2016-03-30 2017-10-05 Stamicarbon B.V. Urea production with bi-pressurized synthesis
US10526281B2 (en) 2016-05-03 2020-01-07 Stamicarbon B.V. Controlling biuret in urea production
WO2017192032A1 (en) 2016-05-03 2017-11-09 Stamicarbon B.V. Urea production with controlled biuret
JP6862381B2 (en) 2018-03-02 2021-04-21 株式会社東芝 Semiconductor device
JP7088770B2 (en) 2018-07-26 2022-06-21 東洋エンジニアリング株式会社 Urea production method and equipment
EA202191768A1 (en) * 2018-12-21 2021-08-11 Стамикарбон Б.В. METHOD AND INSTALLATION FOR PRODUCING CARBAMIDE WITH HEAT INTEGRATION IN LOW PRESSURE REGENERATION SECTION
CN113603113B (en) * 2021-09-17 2024-08-02 浙江建业微电子材料有限公司 Production device and production method suitable for electronic grade ammonia gas and ammonia water
WO2024172703A1 (en) * 2023-02-16 2024-08-22 Акционерное общество "Научно-исследовательский и проектный институт карбамида и продуктов органического синтеза" (АО "НИИК") Method and apparatus for producing urea

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU37505A1 (en) * 1958-08-08
CH468356A (en) * 1966-04-05 1969-02-15 Inventa Ag Process for working up the synthesis mixture obtained in the synthesis of urea from ammonia and carbon dioxide in a synthesis reactor at elevated pressure and elevated temperature
US3876696A (en) * 1968-09-03 1975-04-08 Snam Progetti Process for the production of urea having a low carbamate content
US4036878A (en) * 1972-06-12 1977-07-19 Unie Van Kunstmestfabrieken, B.V. Process for preparing urea
US3826815A (en) * 1972-06-21 1974-07-30 I Mavrovic Recovery of residual ammonia from weak aqueous solutions thereof
JPS5535378B2 (en) * 1973-02-14 1980-09-12
US3922222A (en) * 1973-02-20 1975-11-25 Cf Ind Method for treatment of urea crystallizer condensate
IT1014987B (en) * 1974-06-12 1977-04-30 Snam Progetti INTEGRATED PROCEDURE UREA AM MONIACA
GB1506129A (en) * 1975-04-23 1978-04-05 Snam Progetti Formation of ammonium carbamate solution
AR206244A1 (en) * 1975-05-06 1976-07-07 Mitsui Toatsu Chemicals PROCEDURE TO TREAT WATER VAPOR GENERATED BY CONCENTRATING AN AQUEOUS UREA SOLUTION
JPS5268129A (en) * 1975-12-05 1977-06-06 Mitsui Toatsu Chem Inc Recovery of unreacted material and heat on urea synthesis

Also Published As

Publication number Publication date
IN147029B (en) 1979-10-27
JPS5334721A (en) 1978-03-31
JPS6058228B2 (en) 1985-12-19
LU78097A1 (en) 1978-01-23
US4314077A (en) 1982-02-02
AU511880B2 (en) 1980-09-11
BR7706063A (en) 1978-06-06
SE7710151L (en) 1978-03-10
DE2740358C2 (en) 1982-07-01
AU2767377A (en) 1979-05-03
BE858574A (en) 1978-03-09
IE45681L (en) 1978-03-09
NL7709968A (en) 1978-03-13
ES462234A1 (en) 1978-06-01
PL116475B1 (en) 1981-06-30
MX150529A (en) 1984-05-22
CH625505A5 (en) 1981-09-30
PL200608A1 (en) 1978-05-22
FR2364203B1 (en) 1980-03-14
FR2364203A1 (en) 1978-04-07
CA1106404A (en) 1981-08-04
GB1542371A (en) 1979-03-21
YU212577A (en) 1982-08-31
SE425972B (en) 1982-11-29
DD133091A5 (en) 1978-12-06
DE2740358A1 (en) 1978-03-16
AR219502A1 (en) 1980-08-29
YU39132B (en) 1984-06-30
CS205083B2 (en) 1981-04-30
DK399577A (en) 1978-03-10
IE45681B1 (en) 1982-10-20

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